Now that AMD seems to have given the 40 nm Juniper GPU (on which are based the Radeon HD 5700 series models) a new lease of life, manufacturers can continue to get innovative with the Radeon HD 5770 GPU. One such board partner, Yeston, designed a Radeon HD 5770 X2 graphics card, which simply put, is a dual-GPU graphics accelerator that makes use of two Radeon HD 5770 GPUs, each with its own 1 GB of GDDR5 memory, that share the PCI-Express interface using a PLX-made bridge chip (perhaps the same one used on the Radeon HD 5970).

The PCB holds both GPUs on the obverse side, the PCI-Express bridge chip on the reverse side, and memory chips on both sides. A 4+1 phase VRM is used, additional power is drawn in from just one 6-pin PCI-E power connector. Both GPUs work in tandem via an internal CrossFire interface, it can pair with another Juniper-based graphics card for 3-GPU or 4-GPU CrossFireX. The duo are cooled by a large heatsink, air is circulated by two 90 mm fans. AMD reference clock speeds (for the Radeon HD 5770) of 850 MHz core, and 1200 MHz (4800 MHz GDDR5 effective) memory are used. Display connectivity includes two DVI, one HDMI, and a DisplayPort. Knowing Yeston's reach, it's not very likely that this card will be sold in the US more towards the Asian market.

Well duh, you have 2 x 5870's this card regardless of the 128 bit should sit it right between the 5850 and 5870 performance wise even with its 128bit, and the 5770 is actually a little better than a single 4870 performance wise, price wise and in terms of power, so this card should be win dependaqnt on price.

It's a bit late in the game for something like this, very surprising card to see though, and this just uses one six pin, that's awesome. Probably equivalent to a 5850 depending on how well it scales, then again, i'd rather just get a single 5850 with 100% scaling and move to a second one later on down the road.(they're pretty cheap now anyways)

Articleit's not very likely that this card will be sold in the US more towards the Asian market.

cadaveca said:..And that makes me question a rebrand...wouldn't they be using these gpus for that, if the rebrand was true?

Or are yeilds that good(which bodes well for the 6-series...)...

I'm still blown away by 2 gpus, bridge chip, and mem, with just 150w available..that's killer. A compare between this and 5850 would be really nice to see...what does a 5850 pull?

the rebrand is for Barts and Cayan chips not the cypress and downward chips.If the mid range like the 6770 runs at the 5870-5890 it makes sense for them to rebrand them the 6870.Also these chips will still have the ATi logo on them, from the 6870 onward they will have AMD or just Radeon on the chip itself. As for this card it will go well with the HTPC crowd who want a gamer box also.

H82LUZ73 said:the rebrand is for Barts and Cayan chips not the cypress and downward chips.If the mid range like the 6770 runs at the 5870-5890 it makes sense for them to rebrand them the 6870.Also these chips will still have the ATi logo on them, from the 6870 onward they will have AMD or just Radeon on the chip itself. As for this card it will go well with the HTPC crowd who want a gamer box also.

Rumour is that Barts is 6850/6870, 5770=6770, and Cayman will be 6950/6970.